Clamp for paper-cutting machines



Jan. 2 4, 1 928 c. s zvsogo CLAMP FOR PAPER CUTTING MACHINES Filed Jan. 17 1927 INIVENTOR. M$ M BY ATTORNEY.

Patented Jan. 24, 1928.

UNITED STATES PATENT OFFICE.

CHARLES SEYBOLD, OF DAYTQN, OHIO, ASSIG-NOR TO THE HARRlS-SEYBOLD-POTTER COMPANY, OF DAYTON, OHIO, A GORIPOEATIOII O1? DEIJANVARE.

CLAMP FOR PAPER-CUTTING MACHINES.

Application filed January 17,1927, Serial No. 161,520.

My invention relates particularly to a device for controlling; the return of the clamp to its raised position after the clampin o; and cutting operation.

It has been customary in the past by a has to be lowered to the paper to serve as.

such gauge.

It is the object of my invention to remedy this waste of time in operation by the provision of a stop device for the return move ment of the clamp, which can be readily and easily adjusted for any thickness of pile, so that while the down movement will i not be affected, the operator, if he is cutting piles of any particular thickness, may regulate and control the return of the clamp to a point over the piles just sufficient to permit the sliding into the machine of the next pile.

The invention consists of that novel construction and arrangement of parts to be hereinafter particularly pointed out and claimed, whereby the above mentioned results are attained.

In the drawings Figure 1 is a rear elevation of a portion of the clamp with stop device attached.

Figure 2 is a vertical section on the lines 2-'* of Figure 1.

The device can be readily and easily applied. to any construction of clamp, and I have only illustrated the parts necessary to make clear the invention. The cross frame of the machine is indicated at 1, while 2 is the clamp and 2 the knife which reciprocate in suitable guides in the side standards operable by power or foot treadle in any well known way.

Attached to theclampat any convenient point is a link 3 which is coupled by a crank arm at to a disk 5, which in turn is mounted on a screw threaded stud bolt 6. This stud bolt has a squared medial portion 7 which fits in a correspondingly squared recess in the frame.

Mounted on the projecting squared portion of the stud are disk plates 8 and 9.

The disk 5, which is free to turn on the threaded end of the bolt 6, when turning in one direction will simply unscrew from the bolt, while in turning in the opposite direction, the disk will screw up on the bolt and come into friction contact with the plates 8 and 9. By adjusting the position of the disk 5 by the handwheel 10 on the screw' threaded opposite end 11 of the bolt the point at which the friction of the plates will form a positive stop, can be readily obtained. The threads on the inner end of the bolt 6 are so formed that when the disk 5 rotates in a counterclockwise direction it will unscrew and thus no friction will occur when the clamp is being lowered to the paper pile,

but when the clamp is being raised by its counterweight or otherwise, the disk will be screwed on the bolt to bring the disk 5 against the friction plates.

It will be obvious that the stop can be readily adjusted to automatically stop the upward movement of the clamp at the point desired, and that this stop will be main tained for each-movement of the clamp until V the operator adjusts the handwheel 10 for some other stop position byremovin'gthe disk 5 farther from the friction disks or closer thereto.

Having thus described my inventionwhat I claim as new and desire to secure by LettersPatent 1s:

1. In a paper cutter provided with a mounted intermediate the frame of the ma-' chine and the clamp, with means to adjust the clutch to stop the clamp at any desired position on its return stroke.

3. In a paper cutter provided with a clamp, of a clutch mechanism mounted on p the frame, with connection therefor with the clamp and means for adjusting the clutch to stop the clamp at any desired position on its return stroke.

4. In a paper cutter the combination with the frame, of a clamp adapted to reciprocate therein. and a friction clutch device mounted on theirame, with connections thereii'or with the clamp, and adapted to engage the clamp at any desired position upon its return stroke to serve asa stop. t

5. ilIt-Btilltll'llSlll for limiting the return stroke oi a clamp for paper in a paper cutting; ma

chine com Jrisin a fixed sto) )in inei'nhc'iu 6. Mechanism ttroke oi a claim for paper in a paper cut and a rotatably mounted member threaded so as to approach the fixed stopping member (hiring its rotation, ineaneiconnected with the clamp for rotatine said rotatably mounted member, and a threaded nen'iber providing the axis of rotation ot said rotatablyinountwed member. p i d v for limiting the return tin machine com jllSlllSl' a iixed etc 3 Jill member, and a rotatably mounted member threaded so asto approach the fixed stopping; nember during its rotation, means connected it with the clamp for rotating said rotatably mounted member, a threaded member proraiding the axis of rotation of said rotatabiy mounted member, and means for controlling the position of said member 7Q Mechanism for limiting the return stroke of a clamp for paper in a paper outwtmg machine comprising a tired stopping member, and a rotatably mounted member threaded so as to approach the IlXGtl stopping member during its rotation, means connected with the clamp for rotating said rotatably mounted member a threaded member proJ aiding the axis rot rotation of said rotatably mounted member, and means for controlling the position of said member, said member being mounted at approximately a right ie to the direction of movement of said clamp.

cableto and from the surface of paper to be out, a member having a frictional bearing surface, and a rotatable member operatively connected with said clamp, rotatable in a plane at approximately a right angle to the combination with a paper cutting machine and a clamp tor the papera'eciprm plane of movement of said clamp, and means of varying the plane of ri'itation oi said roand connection torisaid screwthreaded disk w th the clamp, whereby the inoven'icnt oi the clamp in one direction will unscrew said diet; and movement in the opposite direction will apply the friction and etop the clamp movement. a

10. In a paper cutter the C(Jll'ilJilltLiIlOll with the frame oi a clamp adapted to reciprocate therein a non-rotatable bolt secured in the frame, andnonrotatable friction disk plates on said bolt, with a screw threaded dish adapted toengage said friction platen, the

holt being screw threaded at its oiltcr end and connection for said screw threaded disk with the clamp, whereby themorement of: the clanipiii one direction will unscrew said disk and movement in the opposite direction will apply thctriction and stop the ciannii movement, with means for adjusting the position GTE the screw threaded end oi the bolt to adjust the stop position for the clamp. i

11. In a papei" cutter :1 china) etop device comprising a squared stud fixedly mounted on tht-b i ltliillE, with a portion of the stud screw threaded and a crank mounted onthc screw threaded portion with a link connectmg the crank with theclani n whereby the crank will turn treeiy oirthe stud when the crank 1s rocked in oncdlrcctn'm with Il'lfltlfill disks on the stud to he engaged by the cranii when the crank rocked in the opposite direction to stop the crank, (Jili'tlilahlbi trllflli' liOlJi). 

